bool CBitbases::probe(eval_t& eval, const CBoard& board)
{
if (loaded())
{
int32 player = (board.getSide() == eBlack ? _BLACK : _WHITE);
int32 piece[MAX_PIECES] = { _EMPTY, _EMPTY, _EMPTY, _EMPTY, _EMPTY, _EMPTY, _EMPTY, _EMPTY, _EMPTY };
int32 square[MAX_PIECES] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
int32 count = 0;
bb_t pieces = board.getOccupBits();
while (pieces)
{
EField from = popFirstBit(pieces);
EPiece type = board.getPiece(from);
square[count] = from;
switch (type)
{
case eW_P: piece[count] = _WPAWN; break;
case eW_N: piece[count] = _WKNIGHT; break;
case eW_B: piece[count] = _WBISHOP; break;
case eW_R: piece[count] = _WROOK; break;
case eW_Q: piece[count] = _WQUEEN; break;
case eW_K: piece[count] = _WKING; break;
case eB_P: piece[count] = _BPAWN; break;
case eB_N: piece[count] = _BKNIGHT; break;
case eB_B: piece[count] = _BBISHOP; break;
case eB_R: piece[count] = _BROOK; break;
case eB_Q: piece[count] = _BQUEEN; break;
case eB_K: piece[count] = _BKING; break;
case eNP: break;
}
++count;
}
eval_t eval_eg = m_lib.probe_egbb(player, piece, square);
if (eval_eg != NOTFOUND)
{
eval = eval_eg;
++m_hits;
return(true);
}
}
return(false);
}
bool CTablebases::probe(eval_t& eval, const CBoard& board)
{
if (loaded())
{
int rgiCounters[10];
for (int32 i = 0; i < 10; ++i)
rgiCounters[i] = 0;
const int rgsq_cnt = C_PIECES * 5 + 1;
square rgsqWhite[rgsq_cnt];
square rgsqBlack[rgsq_cnt];
for (int32 i = 0; i < rgsq_cnt; ++i)
rgsqWhite[i] = rgsqBlack[i] = XX;
VInitSqCtr(rgiCounters, rgsqWhite, 0, board.getPieceBits(eW_P));
VInitSqCtr(rgiCounters, rgsqWhite, 1, board.getPieceBits(eW_N));
VInitSqCtr(rgiCounters, rgsqWhite, 2, board.getPieceBits(eW_B));
VInitSqCtr(rgiCounters, rgsqWhite, 3, board.getPieceBits(eW_R));
VInitSqCtr(rgiCounters, rgsqWhite, 4, board.getPieceBits(eW_Q));
VInitSqCtr(rgiCounters + 5, rgsqBlack, 0, board.getPieceBits(eB_P));
VInitSqCtr(rgiCounters + 5, rgsqBlack, 1, board.getPieceBits(eB_N));
VInitSqCtr(rgiCounters + 5, rgsqBlack, 2, board.getPieceBits(eB_B));
VInitSqCtr(rgiCounters + 5, rgsqBlack, 3, board.getPieceBits(eB_R));
VInitSqCtr(rgiCounters + 5, rgsqBlack, 4, board.getPieceBits(eB_Q));
int iTb = IDescFindFromCounters(rgiCounters);
if (iTb)
{
bb_t wk = board.getPieceBits(eW_K);
while (wk)
rgsqWhite[C_PIECES * 5] = popFirstBit(wk);
bb_t bk = board.getPieceBits(eB_K);
while (bk)
rgsqBlack[C_PIECES * 5] = popFirstBit(bk);
color side;
int fInvert;
square* psqW;
square* psqB;
if (iTb > 0)
{
side = eWhite == board.getSide() ? x_colorWhite : x_colorBlack;
fInvert = 0;
psqW = rgsqWhite;
psqB = rgsqBlack;
}
else
{
side = eWhite == board.getSide() ? x_colorBlack : x_colorWhite;
fInvert = 1;
psqW = rgsqBlack;
psqB = rgsqWhite;
iTb = -iTb;
}
if (FRegisteredFun(iTb, side))
{
square sqEnP = eNF != board.getEp() ? board.getEp() : XX;
INDEX ind = PfnIndCalcFun(iTb, side) (psqW, psqB, sqEnP, fInvert);
int tbValue = L_TbtProbeTable(iTb, side, ind);
if (tb_broken != tbValue)
{
if (tbValue > 0)
eval = MATE_VALUE + 2 * (-tb_mate_in_1 + tbValue - 1);
else
if (tbValue < 0)
eval = -MATE_VALUE + 2 * (tb_mate_in_1 + tbValue);
else
eval = DRAW_VALUE;
++m_hits;
return (true);
}
}
}
}
return(false);
}